Preoperative planning method for hip joint revision surgery

Abstract

The invention provides a preoperative planning method for hip joint revision surgery. The preoperative planning method comprises the following steps: acquiring pelvis CT data of a patient and reconstructing a pelvis three-dimensional model; performing data measurement on the pelvis three-dimensional model; carrying out registering on a mirror image uninjured side hip bone three-dimensional model and an affected side hip bone three-dimensional model, and determining the position of the central point of the affected side acetabulum; simulating acetabular cup prosthesis placement in the affectedside hip bone three-dimensional model, and determining the acetabular cup prosthesis type; simulating the installation of an acetabular cup prosthesis three-dimensional model, and if the acetabulum onthe affected side is still defective after installation, selecting the number and the positions of acetabular cup cushion blocks or performing filling by using a cup-on-cup technology; and determining the type of a femoral stem prosthesis and the type of a bulb prosthesis. The acetabulum defect area can be accurately determined before an operation, a reasonable operation scheme is formulated, a learning curve is shortened, the operation accuracy is improved, the operation complexity is reduced, the operation time is shortened, the bleeding amount of a patient during the operation is reduced,and the postoperative recovery time is shortened.

Description

technical field [0001] The invention relates to the field of medical orthopedic surgery, in particular to a preoperative planning method for hip joint revision surgery. Background technique [0002] Revision of Total Hip Arthroplasty (RTHA) refers to joint pain caused by prosthesis loosening, subsidence, infection, repeated dislocation and other factors after Total Hip Arthroplasty (THA) Surgery to revisit the artificial joint with limited mobility. With the increase of average life expectancy in the current society, the aggravation of population aging and people's higher and higher requirements for quality of life, the number of patients receiving THA has increased significantly, and the number of people receiving RTHA has also continued to increase. [0003] Acetabular prosthesis loosening and acetabular bone defect are the main problems faced in artificial hip revision surgery, which are usually caused by the following factors: (1) loss of bone mass in the initial operat...

AI Technical Summary

Problems solved by technology

[0003] Acetabular prosthesis loosening and acetabular bone defect are the main problems faced in artificial hip revision surgery, which are usually caused by the following factors: (1) loss of bone mass in the initial operation and bone destruction caused by multiple revisions; (2) Osteolysis due to wear particles, loosening of the prosthesis, and infection; (3) Loss of bone mass upon removal of the prosthesis or cement; (4) Preexisting pelvic fractures, hip dysplasia not corrected at initial surgery

Hip revision surgery with bone defects used to be highly dependent on the surgeon's clinical experience and surgical skills, and the accuracy and safety of the surgery were not fully guaranteed, which is a difficult point for joint surgeons

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